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What is the magnification and the length of an astronomical telescope with the following specifications?

Objective focal length (\(F_o\)) = 985 mm
Eyepiece focal length (\(F_e\)) = 5.0 mm

A. -5,197 mm
B. -140,985 mm
C. -120,197 mm
D. -167,990 mm
E. -197,990 mm

Answer :

The magnification of the astronomical telescope is approximately -0.00508, and the length of the telescope is 990 mm. Hence, the option (e) is correct.

To find the magnification and the length of an astronomical telescope, we can use the formula for magnification:

Magnification = -Fe/Fo

Given:

Fo = 985 mm (focal length of the objective lens)

Fe = 5.0 mm (focal length of the eyepiece)

Plugging the values into the formula, we get:

Magnification = -(5.0 mm)/(985 mm)

Simplifying the expression:

Magnification ≈ -0.00508

So, the magnification is approximately -0.00508.

To find the length of the telescope, we can use the formula:

Length = Fo + Fe

Plugging in the values:

Length = 985 mm + 5.0 mm

Simplifying the expression:

Length = 990 mm

Therefore, the length of the telescope is 990 mm.

To know more about astronomical telescope please refer:

https://brainly.com/question/28113233

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